The climate of India can broadly be classified as a tropical monsoon one. The Indian Meteorological Department (IMD) designates four official seasons:

  1. Winter, from December to early April
  2. Summer or pre-monsoon, from April to June (April to July in north-western India)
  3. Monsoon or rainy, from June to September
  4. Post-monsoon, from October to December

Source: India Book 2020 - A Reference Annual